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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Begich, Mark [D-AK]* 03/20/2012
Sen. Levin, Carl [D-MI]* 03/20/2012
Sen. Mikulski, Barbara A. [D-MD]* 03/20/2012
Sen. Murray, Patty [D-WA]* 03/20/2012
Sen. Cochran, Thad [R-MS]* 03/20/2012
Sen. Johnson, Tim [D-SD]* 03/20/2012
Sen. Cantwell, Maria [D-WA]* 03/20/2012
Sen. Landrieu, Mary L. [D-LA]* 03/20/2012
Sen. Coons, Christopher A. [D-DE] 04/16/2012
Sen. Akaka, Daniel K. [D-HI] 04/19/2012